A ball is thrown vertically upwards. The ball spends a time of 4.6 s in the air, before landing at the same point from where it was thrown. With what initial speed was the ball thrown?

Isobars are lines of constant or equal pressure on a weather map. they can be used to find areas of low or high pressure over a broad area, and they can tell us how intense the system may be. on weather maps, you may have noticed areas that have a large l or h over a region with lines circling around them. the l stands for low pressure and h stands for high pressure. the lines circling them are isobars. check out the pressure system and isobars over georgia and florida. what is the present weather in this area ? a) clear and sunny b) cold and cloudy c) changing weather d) lots of precipitation

How much energy will be transferred to your eardrum while listening to this sound for 1.0 min?

You notice the birds sitting on the electrical wires which of the following explain why the birds don't get shocked